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Wayne State University researchers publish results settling multiple sclerosis debate
Date:2/23/2011

In an effort to develop therapeutic remedies for multiple sclerosis, scientists debate two possible interventional approaches - but they're on opposite sides of the spectrum. Researchers at Wayne State University's School of Medicine, however, have reached a definitive conclusion as to which approach is correct, putting an end to a long-disputed issue.

Harley Tse, Ph.D., associate professor of immunology and microbiology at WSU's School of Medicine and resident of West Bloomfield, Mich., whose study was published in the January 2011 edition of the Journal of Neuroimmunology, found that targeting white blood cells of the immune system known as T cells is the effective approach to block the disease in an animal model of MS, experimental autoimmune encephalomyelitis.

Normally, T cells are programmed to attack foreign substances in the body. However, sometimes these T cells attack an essential component of the central nervous system, the protective layer of nerve cells known as the myelin sheath. This causes the symptoms associated with MS, which include tremors, fatigue, memory loss and other problems.

The debate was centered on treatment of the most common form of the disease, the remitting-relapse form, in which attack episodes alternate with periods of remission. Roughly 85 percent of the 2.5 million sufferers of MS worldwide exhibit the remitting-relapse pattern. "Scientists have been trying to understand how and why the relapse cycles occur and to design therapy to delay disease relapses and hence prolong the remission period," said Tse.

Scientists came up with two conflicting conjectures. Some found that the T cells involved in each relapse were different and were directed against different myelin proteins. As such, these T cells are not suitable targets for therapy. Others, however, could not find support for this in their studies. "It was important to resolve this issue because the two models suggested totally
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Contact: Julie O'Connor
julie.oconnor@wayne.edu
313-577-8845
Wayne State University - Office of the Vice President for Research
Source:Eurekalert

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